The rated voltage of mppt controller is divided into: 12V 24V 36V 48V 60V 72V 96V, of which 12V-48V can be automatically recognized, 60-96V needs to be set manually, before shipment, the factory will set the rated voltage according to the needs of customers. To modify this voltage, you can use this video method to operate. By the way, if the customer wants to modify the charging voltage, then you must set the rated voltage. After setting the rated voltage, you can modify the charging voltage
